{"id":"628b5619-143","name":"AgentResolver Guard — Payment Authorization","description":"$0.001 x402 pre-payment authorization gate for autonomous agents. This live GET example verifies a target x402 challenge and returns a fail-closed eligible/blocked decision plus exact payment terms and evidence. Integrators replace the target URL query parameter and run Guard immediately before each autonomous spend.","endpoint_url":"https://agentresolver.vercel.app/api/payment-guard?url=https%3A%2F%2Fagentresolver.vercel.app%2Fapi%2Fx402-ping&method=GET&maxPriceUsd=0.01&expectedNetwork=eip155%3A8453","endpoint_canonical":"https://agentresolver.vercel.app/api/payment-guard?expectedNetwork=eip155%3A8453&maxPriceUsd=0.01&method=GET&url=https%3A%2F%2Fagentresolver.vercel.app%2Fapi%2Fx402-ping","category":"tools.verification","kind":"api","price_amount":0.001,"price_currency":"USDC","chains":["base","solana"],"request_schema":null,"response_schema":null,"sample_query":null,"facilitator_url":null,"status":"verified","delisted_reason":null,"origin":"submitted","ephemeral":false,"created_at":1789683456,"updated_at":1789683726,"status_changed_at":1789683726,"embedding_synced_at":1789683458,"score":1,"p50_latency_ms":604,"p95_latency_ms":1426,"p99_latency_ms":2136,"probe_count":974,"probes_passed":974,"last_ok_at":1794020562,"consecutive_failures":0,"last_probed_at":1794020562,"probe_interval_s":7200,"distinct_payers":0,"x402_version":2,"transport":"header","obs_scheme":"exact","accepts_count":2,"accepts_index":0,"obs_network":"eip155:8453","obs_asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","obs_pay_to":"0x66E19457fFC829E8Ed74706f5c1399C6F6466dE8","amount_atomic":"1000","amount_usd":0.001,"domain_name":"USD Coin","domain_version":"2","observed_at":1794020562,"obs_first_seen_at":1789683485,"price_changed_at":null,"pay_to_changed_at":null,"payto_unstable":false,"payto_distinct_recent":1,"onchain_provider_status":null,"onchain_payto_checked":"0x66e19457ffc829e8ed74706f5c1399c6f6466de8","onchain_checked_at":1794018995,"onchain_last_attempt_at":1794018995,"onchain_provider_error":0,"onchain_source":"index","header_bytes":7794,"verified_via":"GET","testnet":false,"payment_protocols":["x402"],"mpp_methods":null,"mpp_offers":null,"mpp_note":null,"onchain_payto_shared_listings":15,"onchain_count_capped":false,"onchain_shape":null,"onchain_daily":[{"day":"2026-10-08","tx":6,"payers":1,"usd":0.026},{"day":"2026-10-11","tx":1,"payers":1,"usd":0.002},{"day":"2026-10-14","tx":1,"payers":1,"usd":0.001},{"day":"2026-10-26","tx":1,"payers":1,"usd":0.002},{"day":"2026-10-29","tx":1,"payers":1,"usd":0.001},{"day":"2026-11-02","tx":1,"payers":1,"usd":0.001},{"day":"2026-11-04","tx":1,"payers":1,"usd":0.002}],"latest_purchase_delivered":true,"latest_purchase_at":1790234897,"paid_verification_latest":{"at":1790234897,"delivered":true,"tx_hash":"0x907c91808b94a17d039f6cfc5020af2024a5fbac0ed2794e6752ac89aaf6be54","amount_usdc":0.001,"failure_reason":null,"note":"Most recent settled purchase by the nohumans scout; it delivered.","at_iso":"2026-09-24T07:28:17Z","age_days":43},"paid_verification":{"verified":true,"verified_at":1790234897,"tx_hash":"0x907c91808b94a17d039f6cfc5020af2024a5fbac0ed2794e6752ac89aaf6be54","amount_usdc":0.001,"schema_validated":null,"note":"Real USDC paid and response inspected by nohumans scout. One-time verification, not continuous.","verified_at_iso":"2026-09-24T07:28:17Z","age_days":43},"has_sample":false,"method_note":null,"paid_verified":true,"paid_verified_at":1790234897,"paid_depth":{"rung":"paid_verified","deliveries":2,"span_weeks":1,"first_ok_at":1790234836,"last_ok_at":1790234897,"last_attempt_ok":1,"through_change":false,"first_ok_at_iso":"2026-09-24T07:27:16Z","last_ok_at_iso":"2026-09-24T07:28:17Z"},"payto_sentinel":false,"payto_note":null,"evidence_tier":"paid_verified","evidence_note":"We paid this endpoint real USDC and confirmed settlement on-chain; the response was inspected.","verdict_age_seconds":54,"probe_tier":"stable","next_check_by":1794027762,"next_check_basis":"stable tier, re-probed every 2 hours: verified with no failure in the last 24 h and no change of terms or status in 7 days, or failing 11 to 50 times in a row; any failure moves it to the watch tier on that probe; a record past next_check_by is stale by our own rule","last_probed_at_iso":"2026-11-07T03:02:42Z","next_check_by_iso":"2026-11-07T05:02:42Z","status_changed_at_iso":"2026-09-17T22:22:06Z","paid_verified_at_iso":"2026-09-24T07:28:17Z","probes_failed":0,"onchain_scope":"wallet-level, NOT this endpoint's: the payTo address is shared by 15 active listings, so these on-chain counts cover all of them; never attribute them to one endpoint or add them across listings","onchain_wallet":{"scope":"wallet-level, NOT this endpoint's: the payTo address is shared by 15 active listings, so these on-chain counts cover all of them; never attribute them to one endpoint or add them across listings","shared_by_listings":15,"pay_to":"0x66e19457ffc829e8ed74706f5c1399c6f6466de8","tx_count_30d":12,"unique_payers_30d":6,"volume_usd_30d":0.035},"onchain_tx_count_30d":12,"onchain_unique_payers_30d":6,"onchain_volume_usd_30d":0.035,"created_at_iso":"2026-09-17T22:17:36Z","updated_at_iso":"2026-09-17T22:22:06Z","embedding_synced_at_iso":"2026-09-17T22:17:38Z","last_ok_at_iso":"2026-11-07T03:02:42Z","observed_at_iso":"2026-11-07T03:02:42Z","obs_first_seen_at_iso":"2026-09-17T22:18:05Z","onchain_checked_at_iso":"2026-11-07T02:36:35Z","onchain_last_attempt_at_iso":"2026-11-07T02:36:35Z","latest_purchase_at_iso":"2026-09-24T07:28:17Z","paid_verified_age_days":43,"latest_purchase_age_days":43,"report_outcome":{"how":"POST https://api.nohumans.directory/v1/reports","when":"after you paid this endpoint on Base, whether or not it delivered","body":{"listing_id":"628b5619-143","ok":"JSON boolean: did it deliver what it promised","tx_hash":"your payment's transaction hash on Base","payer_signature":"EIP-191 personal_sign of message_to_sign by the wallet that paid"},"message_to_sign":"nohumans.directory report v1\nlisting_id: 628b5619-143\ntx_hash: <tx_hash, lowercase>\nok: <true|false>","distinct_payers_reported":0,"weight":"counts toward ranking once 3+ distinct payers have reported this listing","help":"https://api.nohumans.directory/v1/reports"},"observed":{"checked_at":1794020562,"x402_version":2,"challenge_transport":"header","scheme":"exact","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","pay_to":"0x66E19457fFC829E8Ed74706f5c1399C6F6466dE8","payment_options":2,"accepts_index":0,"extra":{"name":"USD Coin","version":"2"},"amount_atomic":"1000","amount_usd":0.001,"eip712_domain":{"name":"USD Coin","version":"2"},"price_stable_since":1789683485,"price_matches_listing":true,"payto_stable_since":1789683485,"checked_at_iso":"2026-11-07T03:02:42Z","price_stable_since_iso":"2026-09-17T22:18:05Z","payto_stable_since_iso":"2026-09-17T22:18:05Z"}}